Cornerstone Antique Classic Overdrive Pedal
Looking at the controls, there are Volume, Gain, Tone and Presence.
The Gain control determines the amplification factor of the pedal, and thus the overall saturation and the Volume control acts as a master output control.
The Tone control manages the frequency content of the entire signal while the Presence control specifically shapes the high-end content. These two controls together with the mids switch, allow you to discover different sounds and colors.
The Antique requires a standard 9V DC Negative power supply only.